英漢辭典

1. adj. (形容詞 adjective)
   1. 肯定的,必然的;確信的

   It is certain that

   可以肯定…

   I am [feel] certain that

   我確信…

   He is certain of victory.

   他對勝利有把握.

   He is certain to succeed.

   他一定會成功. (It is certain that he will succeed.)

   Are you certain of that?

   你對那事有把握吧?

2. 2. (事情)確實的,不可避免的,必然發生的;(知識、技術等)正確的,可靠的

   His touch on the piano is very certain.

   他彈奏鋼琴的方法很正確

   the certain advance of age and decay.

   必不可免的日益年老體衰.

3. 3. [廢] 固定的

   a certain remedy for the disease

   此種病的對症藥

4. 4. 可確定的,一定的

   at a certain place

   在一定場所.

5. 5. (不便胡說的)某一,某些,相當的

   a certain person

   某人

   a certain Mr. Smith

   一個叫艾密斯先生的人

   a woman of a certain description

   某一類型的女人

   a lady of a certain age

   相當年紀[中年]的女人

   to a certain extent

   在一定程度上

   make a certain profit

   賺了一些錢.

6. 6. 某些

   Certain of my friends are against the plan.

   我的某些朋友反對這個計劃.

柯林斯英英辭典

adj. (adjective)

1. [postpositive] positive and confident about the truth of something; convinced

I am certain that he wrote a book

2. [usually postpositive] definitely known

it is certain that they were on the bus

3. [usually postpositive] sure; bound; destined

he was certain to fail

4. decided or settled upon; fixed

the date is already certain for the invasion

5. unfailing; reliable

his judgment is certain

6. moderate or minimum

to a certain extent

determiner

1. known but not specified or named

certain people may doubt this

2. (as pronoun; functioning as plural)

certain of the members have not paid their subscriptions

3. named but not known

he had written to a certain Mrs Smith

4. [Etymology] C13: from Old French, from Latin certus sure, fixed, from cernere to discern, decide